Lisa: You Can't Afford This. How Can You Afford This?

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Lisa: You can't afford this. How can you afford this?
Bart: Ahh you've been all edgy and suspicious ever since I gave you
those Pep Pills.
Lisa: [peppy and speedy] What are you talking about-I don't need
pep pills to be suspicious-If I wanna comment on it, I'll
comment on it-Who's gonna stop me-You, Pep Pill Boy?-Pep boys-
pills-Beverly Sills-Oh boy ah boy-Uh oh-uh oh... [walks out
of Bart's room and off-screen]
Uh oh. I gotta stop taking those pills...
-- Lisa uses Bart's pep pills present pretty early,
"The Canine Mutiny"